Moved from ports with several enhancements

1 files changed, 74 insertions, 0 deletions

diff --git a/lib/libncurses/lib_refresh.c b/lib/libncurses/lib_refresh.c
new file mode 100644
index 0000000..72ab095
--- /dev/null
+++ b/lib/libncurses/lib_refresh.c
@@ -0,0 +1,74 @@
+
+/* This work is copyrighted. See COPYRIGHT.OLD & COPYRIGHT.NEW for   *
+*  details. If they are missing then this copy is in violation of    *
+*  the copyright conditions.                                        */
+
+/*
+ *	lib_refresh.c
+ *
+ *	The routines wredrawln(), wrefresh() and wnoutrefresh().
+ *
+ */
+
+#include "curses.priv.h"
+
+int wredrawln(WINDOW *win, int beg, int num)
+{
+	T(("wredrawln(%x,%d,%d) called", win, beg, num));
+	touchline(win, beg, num);
+	wrefresh(win);
+	return OK;
+}
+
+int wrefresh(WINDOW *win)
+{
+	T(("wrefresh(%x) called", win));
+
+	if (win == curscr)
+	    	curscr->_clear = TRUE;
+	else
+	    	wnoutrefresh(win);
+	return(doupdate());
+}
+
+int wnoutrefresh(WINDOW *win)
+{
+int	i, j;
+int	begx = win->_begx;
+int	begy = win->_begy;
+int	m, n;
+
+	T(("wnoutrefresh(%x) called", win));
+
+	win->_flags &= ~_HASMOVED;
+	for (i = 0, m = begy; i <= win->_maxy; i++, m++) {
+		if (win->_firstchar[i] != _NOCHANGE) {
+			j = win->_firstchar[i];
+			n = j + begx;
+			for (; j <= win->_lastchar[i]; j++, n++) {
+		    	if (win->_line[i][j] != newscr->_line[m][n]) {
+					newscr->_line[m][n] = win->_line[i][j];
+
+					if (newscr->_firstchar[m] == _NOCHANGE)
+			   			newscr->_firstchar[m] = newscr->_lastchar[m] = n;
+					else if (n < newscr->_firstchar[m])
+			   			newscr->_firstchar[m] = n;
+					else if (n > newscr->_lastchar[m])
+			   			newscr->_lastchar[m] = n;
+		    	}
+			}
+		}
+		win->_firstchar[i] = win->_lastchar[i] = _NOCHANGE;
+	}
+
+	if (win->_clear) {
+	   	win->_clear = FALSE;
+	   	newscr->_clear = TRUE;
+	}
+
+	if (! win->_leave) {
+	   	newscr->_cury = win->_cury + win->_begy;
+	   	newscr->_curx = win->_curx + win->_begx;
+	}
+	return(OK);
+}